EP0285457A1 - Procédé et dispositif pour l'élevage de crustacés - Google Patents

Procédé et dispositif pour l'élevage de crustacés Download PDF

Info

Publication number
EP0285457A1
EP0285457A1 EP88302997A EP88302997A EP0285457A1 EP 0285457 A1 EP0285457 A1 EP 0285457A1 EP 88302997 A EP88302997 A EP 88302997A EP 88302997 A EP88302997 A EP 88302997A EP 0285457 A1 EP0285457 A1 EP 0285457A1
Authority
EP
European Patent Office
Prior art keywords
shellfish
container
water
containers
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88302997A
Other languages
German (de)
English (en)
Inventor
Edmund Michael Brooke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0285457A1 publication Critical patent/EP0285457A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C29/00—Processing shellfish or bivalves, e.g. oysters, lobsters; Devices therefor, e.g. claw locks, claw crushers, grading devices; Processing lines
    • A22C29/04—Processing bivalves, e.g. oysters
    • A22C29/043—Cleaning operations on bivalves, e.g. evisceration, brushing, separation of meat and shell material
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/50—Culture of aquatic animals of shellfish
    • A01K61/54—Culture of aquatic animals of shellfish of bivalves, e.g. oysters or mussels
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/50—Culture of aquatic animals of shellfish
    • A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/02—Receptacles specially adapted for transporting live fish
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • the present invention relates generally to a shellfish culture system, and to a method of culturing shellfish.
  • molluscs very readily become contaminated in areas where water pollution exists because molluscs, such as mussels and oysters, feed and respire by passing the current of water between the two shell valves and over the gills.
  • the gills have complex surfaces at which oxygen for respiration is removed from the water and small particulate matter, including food, organic debris and bacteria is trapped in mucus and passed to the mouth for ingestion.
  • the shellfish may accumulate pathogenic material, but when polluted shellfish are moved to a clean environment free from pollution their natural re-circulating processes expel contaminants by physical expulsion. Pathogenic bacterial contamination ceases by natural mortality.
  • the shellfish metabolism is only properly active above a certain minimum threshold temperature and below a critical temperature at which the maximum dissolved oxygen content has fallen to a minimum level tolerable by the shellfish.
  • shellfish activity increases with an increase in temperature the fall in dissolved oxygen content with an increase in temperature places a practical upper limit on the temperature which the water must be allowed to reach. This may, of course, also be compensated by an efficient aeration system, but nevertheless close control of both temperature and aeration is required.
  • the present invention seeks to provide an intensive shellfish purification system in which the above disadvantages of known such systems are overcome, and which requires a relatively small base area whilst nevertheless providing optimum conditions for each shellfish to purify itself with an uncontaminated through-flow of clean water.
  • a shellfish culture or purification system characterised in that it includes a plurality of stackable shallow containers each having an imperforate bottom wall, imperforate side walls, overflow means to limit water therein to a maximum level determined by the level of the overflow means, and a drainage hole, each of the containers having means for supporting shellfish spaced from the bottom wall of the said container when placed theein whereby to allow detritus to fall below the level at which the shellfish are supported.
  • the present invention thus provides means by which shellfish may be grown in a restricted environment for long periods as well as means specifically directed to short-term purification, and thus encompass means for culturing shellfish as well as means for purifying them.
  • the overflow means of each container allows the water in each container to reach a maximum level, successively lower containers receiving their input from the overflow of the adjacent container above it. Because of the weir effect the water at the surface is allowed to flow over from an upper container into the next lower container, whereas detritus falling from the shellfish during purification falls onto the bottom of the container below the level at which the shellfish are supported.
  • the means for supporting the shellfish spaced from the bottom comprises a foraminous inner tray or liner in an arrangement such that the bottom wall of the tray or liner is spaced from the bottom of the container.
  • the spacing may be achieved by resting the tray or liner on upstanding supports, such as studs or ledges rising from the bottom of the container, or by providing the tray or liner with its own legs or ribs which hold its bottom wall spaced from the bottom of the container.
  • the presence of the mesh serves not only in helping to still the water currents so that detritus falling from the shellfish onto the bottom of the container is undisturbed by the through-flow of water, and also maintains the shellfish themselves out of contact with the detritus so that at the end of the purification cycle or growth period, when the tanks are drained down to allow removal of the shellfish, the inner foraminous trays can be lifted out from the individual containers without causing any disturbance to the detritus, thereby facilitating the subsequent washing of the now purified shellfish.
  • each foraminous tray is made of a mesh or perforate material and has downwardly projecting feet or ribs for contacting the bottom of the container so as to hold the major part of the bottom of the mesh of perforate tray spaced therefrom.
  • the containers may have shoulders or ledges for receiving the edges of the mesh or perforate trays to space the bottom of the tray from the bottom of the container.
  • a stack of containers having inner mesh or perforate trays therein may be housed in an outer tank or tray from which water may be pumped to a water cleaning or purification circuit.
  • This cleaning and purification circuit preferably includes component elements, known per se, for cleaning and purifying the water, and for example may include an ultra-violet light steriliser, a water temperature control unit (particularly a refrigerator, although a heater may also be provided for sites where winter temperatures fall to a very low level) and, if required, at least one filter.
  • the stack of containers may, alternatively be positioned over an open tank from which water is drawn at a point sufficiently spaced from the bottom to allow it to serve as a sediment settling tank.
  • the water cleaning and purification circuit preferably also includes a reservoir able to contain a quantity of water in excess (and preferably substantially in excess) of that required to fill all of the stackable containers in the stack to the level of the said standpipe overflows therein.
  • the overflow means in the stackable containers may be in the form of standpipe overflows which are preferably offset towards one end of the containers, which latter are symmetrical about a longitudinal centre line to allow vertically adjacent containers to be longitudinally reversed so that a through-flow of water entering from the standpipe overflow of the container above and exiting from the container's own standpipe overflow is obtained.
  • the inner mesh or perforate tray may be shaped such that the standpipe overflow of a stackable container housing the tray passes outside the perimeter of the tray, or alternatively may have at least one opening sufficiently large to permit the passage of a standpipe overflow therethrough.
  • the or each container has water-directing input means for directing the inflow of water to a low level in the container.
  • said water-­directing input means comprise a barrier at the end of the container opposite the said overflow means, extending above the level of the overflow means and defining water passages adjacent the bottom of the container.
  • the container may be provided with means for supporting shellfish spaced from the bottom wall of the container comprising or including a plurality of parallel upstanding ribs defining parallel channels therebetween and the upper surfaces of which constitute support surfaces for the shellfish or for containment means housing the shellfish.
  • the water cleaning and purification circuit may also include water oxygenation means of any known type.
  • the present invention provides a tray for use in a circulating fluid system such as a shellfish purification circuit, characterised by comprising a shallow outer container having imperforate bottom and side walls, overflow means towards one end thereof, and means for supporting shellfish spaced from the bottom of the container such that detritus falling from the shellfish can accumulate at a level lower than the lowermost shellfish, and such that water entering the container can be directed to flow from an inlet at a lower level than the level of the lowermost shellfish.
  • a circulating fluid system such as a shellfish purification circuit
  • a method of shellfish culture comprises maintaining the shellfish in a shallow layer in purified running water for a period sufficiently long for required growth or development to take place and/or for any contaminants to be excreted therefrom, in which the shellfish are held in a plurality of superimposed layers each layer being separated by a horizontal barrier wall from the adjacent underlying layer, and each layer being spaced from the said barrier wall by a water permeable support layer having openings therein sufficiently large to allow particulate matter excreted by the shellfish to pass therethrough, and directing the flow of water sequentially over the superimposed layers by withdrawing it from a free surface level above each layer of shellfish and introducing it into the water surrounding an underlying layer of shellfish.
  • a tray for use in a circulating fluid system is generally indicated with the reference numeral 11 and comprises an outer shallow container 12 of generally rectangular plan form with an imperforate bottom wall 37, a pair of upright parallel longer side walls 13 and a pair of upright parallel shorter side walls 14.
  • a standpipe 15 Upstanding from the bottom of the container 12, aligned with the longitudinal centre line parallel to the longer side walls 13 and nearer to one of the shorter side walls 14 than the other is a standpipe 15 the height of which is slightly less than that of the side walls 13, 14 and which opens through an aperture in the bottom of the container 12.
  • an inner tray 16 of complementary shallow, rectangular upwardly open shape which has two parallel longitudinal side walls 17 and two parallel shorter side walls 18 projecting up from a flat horizontal mesh base 19.
  • the side walls 17, 18 may also be mesh, as illustrated in Figures 1, 2 and 3 or the base only may be of foraminous, perforate or mesh structure.
  • the openings in the foraminous, perforate or mesh structure constituting the inner tray 16 are preferably only slightly less than the dimensions of the shellfish to be contained therein, and preferably occupy a major part of the surface area of the bottom wall 19 and (if so formed) the side walls 17, 18.
  • the shape of the container 12 allows it to be stacked, as shown in Figure 2, with similar such containers in a vertical stack having overflow standpipes 15 of adjacent containers at opposite ends so that, as illustrated by the arrows in Figure 2, water can flow from the uppermost container into which it is introduced as will be described in more detail below, and pass through the overflow standpipe 15 into the next lower container and, subsequently, flow out from this container into the next lower container each time providing the minimum disturbance to the water in the container into which it enters.
  • each mesh tray 16 is provided with two parallel ribs or feet 20 in approximate alignment with the end walls 18 so that the base 19 is held spaced from the bottom wall of the container 12 in which the tray is housed.
  • the stack of containers 12 is located within an outer tank 21 which has a drain hole 22 leading to a further part of the circuit which will be described in relation to Figure 3.
  • each container 12 has a small drain hole which allows the whole of the container to drain if there is no continuing inflow of water. This is a safety precaution since shellfish remain in a healthier state in the absence of water than they do in stagnant water and, in the event of breakdown or failure of the water circulating system it is preferable for the containers 12 to drain than to leave them filled with stagnant water.
  • FIG. 3 there is shown a tank 21 housing a stack of four containers 12 of the type illustrated in Figures 1 and 2, each containing a shallow layer of shellfish.
  • a tank 21 housing a stack of four containers 12 of the type illustrated in Figures 1 and 2, each containing a shallow layer of shellfish.
  • the surface area of floor space taken up by the tank 21 is being used four times more effectively than in prior art purification systems in which a shallow tank could take only a single layer of shellfish.
  • a pipe 23 leads to a filter 24 which comprises a coarse strainer or cartridge filter feeding out by gravity through a pipe 25 leading to a reservoir 26 with an air-break between the outlet of the pipe 25 and the surface of the water in the reservoir 26.
  • the outlet from the tank 26 leads via a pipe 27, again by gravity, to a further filter 28 in the form of a gravel filter or cockle shell biological filter, which is connected by a pipe 29 to a refrigeration plant 30.
  • the refrigeration plant 30 is considered to be optional, however, and may be dispensed with if the circumstances of the purification system are such that temperatures in excess of a critical threshold at which dissolved oxygen becomes insufficient to support the molluscs in a healthy state is unlikely to be experienced.
  • a purification cycle consists in loading shallow layers of shellfish in the mesh trays 16 within the containers 12, and stacking these as illustrated in the drawings. Water is then introduced into the uppermost container 12 through the delivery pipe 35 and, having filled the uppermost container 12, overflows into the next lower container and so on until it leaves the lowermost container 12, enters the tank 21 and passes out from this through the opening 22 into the water purification circuit where large scale detritus is filtered out in the filters 24, settled out in the tank 26 and further filtered in the filter 28 before the water is passed to a refrigeration unit for cooling (if required) and then pumped through the ultra-violet water purification system where any bacterial contamination is eradicated.
  • Oxygenation of the water is then effected in order to ensure that the water delivered to the shellfish has an adequate oxygenation level to promote activity at the maximum metabolic rate permitted by the ambient temperature.
  • the pump 31 is switched off allowing the containers 12 to drain down through the drain holes (not shown) referred to above.
  • the tray 16 can be lifted out leaving any detritus excreted by the shellfish in a layer on the bottom of the container 12 undisturbed by the removal of the shellfish themselves in the tray 16. These can be washed lightly in fresh clean water and then packed for shipping. The tray 16 is then immediately ready for re-use.
  • the container 12 on the other hand, housing the layer of faecal material must be hosed down and/or sterilised, if desired, before re-use.
  • the robust construction of the containers 12 allows a stack, in practice, to be very much higher than the four-high stack illustrated in the drawings by way of example. It is anticipated, therefore, that individual batches of shellfish up to 20 tonnes may be purified in a floor area previously capable of processing only a few hundred kilogrammes.
  • the two-part container or tray of the present invention may in practice be used for other purposes and the invention may thus be conceived as constituting a tray suitable for use in a circulating fluid system such as a shellfish purification circuit (but not exclusively for such purpose), comprising a shallow outer container having imperforate bottom and walls and an overflow means towards one end thereof, and an inner tray of foraminous or mesh material which, when placed in the outer container, rests with at least the major part of its bottom wall spaced from the bottom of the container.
  • a circulating fluid system such as a shellfish purification circuit
  • the stack of trays 14 may be positioned at a high level over the supporting container, in place of the container 21 which can then fulfil the same function as the reservoir 26.
  • the outlet, replacing the outlet pipe 27 from the reservoir 26 in Figure 3 would be taken from a point sufficiently far above the bottom of the tank to allow settlement of sediment thereby avoiding the necessity for the filter 24.
  • This simplified system would involve lower initial costs whilst nevertheless providing all the necessary features including an adequate reserve supply of water and a sufficient separation of sedimentary particles during the passage around the circuit.
  • the filter 28 may also be dispensed with.
  • the circuit can be arranged so that the outlet from the pipe 35 sprinkles the water onto the stack 12 from a greater height above the uppermost tray than illustrated in Figure 3, and the standpipe overflows may likewise be arranged so that the water moving from an upper tray to a lower one is caused to fall through the air between one tray and another thereby allowing the water to be oxygenated in transit making it possible to dispense with the oxygenation plant 34.
  • the overflow means may be in the form of standpipes placed outside the inner trays, or other water channels moulded into the container itself. In the former case the trays will then be made shorter than the containers.
  • a plurality of standpipe overflows may be positioned at one end of a rectangular container, with a mesh tray occupying the remaining part thereof.
  • FIG. 4 there is shown an alternative conformation for the containers 12. This conformation is provided in order to make it possible to avoid the necessity for a standpipe overflow such as the overflow 15 in the embodiment of Figure 1 so that the mesh container 16 does not require an opening to allow the overflow to project through its bottom wall 19.
  • the containers are indicated with the reference numeral 41 and each is shaped such that it has three side walls of the same height defining an upper rim 42 whilst at one end, indicated by the reference numeral 43 there are formed weir means at a level lower than the rim 42.
  • the weir means may be in the form of one or a plurality of holes passing through the end wall 43 or may be one or more recesses in the upper edge which lower this edge to a short distance below the rim 42.
  • the containers 41 also have locating means so that they can be stacked in a laterally off-set arrangement as illustrated in Figure 4 so that the end walls 43 of each container 41 are spaced inwardly from the opposite end walls of the container 41, in this case indicated by the reference numeral 44.
  • the end walls 44 thus overhang the end walls 43 so that water in an upper container 41 can fill this to a level indicated by the chain line 45 and then flow out through the weir means (not illustrated) before reaching the level of the rim 42.
  • the water falls from an upper container 41 into the exposed end portion of the underlying container 41 adjacent the end wall 44 thereof and can then fill the underlying container until reaching the level 45 whereupon it flows over the weir means into the next underlying container 41, and so on until reaching the lowermost container 41 whereupon the water flows into the collection tank 21 from which it passes into a circuit such as that illustrated in Figure 3 or any of the modified circuits described hereinabove.
  • the alternative embodiment shown differs in that it has different means for supporting the shellfish spaced from the bottom of the container.
  • the container illustrated in Figures 1 to 4 includes an internal removable mesh tray or liner 16, 47
  • the container illustrated in Figures 5 and 6, which is indicated with the reference numeral 50 has a bottom wall 51 formed with a plurality of longitudinally extending channels 52 defined by spaced upstanding ribs 53 which are integrally moulded with the container 50 itself. In order to form the container 50 with sufficient strength this may conveniently be rotationally moulded from plastics material.
  • the container 50 has upstanding side walls 54, 55 and end walls 56, 57 and has an internal structure constituted by two barriers or baffles 58, 59 the function of which will be described in more detail below.
  • the barrier 58 is a weir or dam barrier which separates a main central portion 60 of the container 50 from an outlet compartment 61 in the bottom wall of which is formed an outlet opening 62.
  • the barrier 59 is an input diffuser or deflector baffle which separates the central compartment 60 from an input chamber 64.
  • the baffle 59 spans the whole width of the container 50 between the opposite side walls 54, 55 and rises to a level close to the perimeter of the container 50 defined by the side walls 54, 55 and end walls 56, 57, whilst its lower edge is in contact with the upper surfaces 65 of the longitudinal ribs 53 which define the channels 52, and which extend from the central compartment 60 into the input chamber 64 thereby defining small openings 66 beneath the baffle 59 and between adjacent ribs 53 by which the input chamber 64 communicates with the main compartment 60.
  • the weir barrier 58 whilst also spanning the width of the container 50 between opposite side walls 54, 55 contacts the bottom 51 of the container and extends upwardly from this bottom wall 51 to a level, spaced from the upper rim of the container 50 defined by the side walls 54, 55 and end walls 56, 57 such as to define, in use, the maximum free surface level 67 of water in the central compartment 60 as can be seen from Figure 5.
  • Water in the compartment 60 cannot rise to a level higher than that of the weir barrier 58 without overflowing the weir into the output chamber 61 from which it flows out through the outlet opening 62 in the bottom wall 51 which is common with the bottom wall of the whole container 50.
  • the ribs 53 which define the channels 52 abut the facing surface of the weir barrier 58 but do not project beyond it into the output chamber 61.
  • the central compartment 60 has a drain hole 68 at a central location.
  • a stack such as that shown by the three containers illustrated in Figure 5 is made by superimposing successive containers 50 longitudinally reversed so that in each container the output compartment wall 56 lies over an input compartment wall 57 and it itself overlain by an input compartment wall 57.
  • Water entering the input compartment 64 is constrained to flow from this into the main compartment 60 only through the openings 66 between adjacent ribs 53 and under the input baffle 59 the height of which is greater than that of the weir barrier 58 so that the upper edge of the input baffle 59 always rises above the surface of the water in the container 50.
  • the inflow of water is both stilled and caused to enter at a low level so that any risk that the fresh water would float at a high level and be discharged over the weir without having flushed the shellfish in the main compartment 60 is avoided.
  • the beneficial effect is also achieved that the flow of water from a low level through the opening 66 to a high level where the water overflows the weir barrier 58 means that the shellfish in the main compartment 60 experience a rising flow of water which has been found in practice to be beneficial, especially if the apparatus of the invention is used for long term culture or growth of shellfish rather than merely for purification.
  • the shellfish may rest in bulk on the ribs 53 or may be further contained in foraminous trays such as those illustrated in Figures 1 to 4 or, as illustrated in Figure 5, may be contained in nets carrying a convenient quantity of shellfish for subsequent processing and/or transport. Individual nets of shellfish can be readily handled using hook or grab mechanisms and the loose packing of shellfish in nets nevertheless allows the shellfish to form a relatively shallow layer within the compartment 60 during treatment.
  • the water flow parallel to the channels 52 defined by the grooves 53 also avoids turbulence, any splashing or water flow caused by liquid falling from an upper opening 62 of an overlying container 50 being damped within the input chamber 64, and a thorough flushing of the whole of the central compartment 60 is achieved without the risk of any dead spots or backwater areas where no substantial flow takes place.
  • the rising flow of water up and around the shellfish also ensures that these are maintained in optimum conditions for growth and/or for purification, whilst the configuration of the container allows ready cleaning, for example by pressure washing after the shellfish have been removed and the trays emptied.
  • the small openings 68 in the main compartment 60 allow these to drain slowly so that should the input water supply fail the whole system will slowly drain down rather than remain stagnant.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Food Science & Technology (AREA)
  • Farming Of Fish And Shellfish (AREA)
EP88302997A 1987-04-03 1988-04-05 Procédé et dispositif pour l'élevage de crustacés Withdrawn EP0285457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878708053A GB8708053D0 (en) 1987-04-03 1987-04-03 Shellfish purification system
GB8708053 1987-04-03

Publications (1)

Publication Number Publication Date
EP0285457A1 true EP0285457A1 (fr) 1988-10-05

Family

ID=10615217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88302997A Withdrawn EP0285457A1 (fr) 1987-04-03 1988-04-05 Procédé et dispositif pour l'élevage de crustacés

Country Status (2)

Country Link
EP (1) EP0285457A1 (fr)
GB (1) GB8708053D0 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0934697A1 (fr) * 1997-12-09 1999-08-11 Navital S.a.r.l. Procédé pour élever, traiter et stocker des coquillages indépendant de la saison et installation pour exécuter ce procédé
FR2790074A1 (fr) * 1999-02-23 2000-08-25 Gerard Marret Installation pour le refroidissement ou le rechauffement d'un liquide, notamment de l'eau de mer
GB2349786A (en) * 1999-05-12 2000-11-15 Univ Portsmouth Apparatus and method for rearing and collection of aquatic organisms
FR2801472A1 (fr) * 1999-11-30 2001-06-01 Thomas Froid Sa Procede d'entreposage, de transport et de conservation de langoustines et autres crustaces, vivants et dispositif permettant la mise en oeuvre du procede
ES2187326A1 (es) * 2000-10-10 2003-06-01 Mariscos Veiro S L Dispositivo depurador de moluscos mediante circulacion forzada de agua, y metodo correspondiente.
EP1474972A1 (fr) * 2003-05-09 2004-11-10 Tecno Impianti Di Gabellini Gregorio Conteneur à nettoyer les coquillages
WO2005067707A1 (fr) * 2004-01-13 2005-07-28 Froeyland T Kjetil Dispositif de deplacement, de transport et de liberation de crustaces juveniles et utilisation dudit dispositif
WO2008018053A2 (fr) * 2006-08-10 2008-02-14 Ramot At Tel-Aviv University Ltd Procédé et appareil de propagation d'invertébrés marins benthiques
WO2008034173A1 (fr) * 2006-09-20 2008-03-27 John Kowarsky Systeme d'aquaculture
WO2011138493A1 (fr) * 2010-05-07 2011-11-10 Rotogal, S.L. Contenant pour le nettoyage de mollusques
FR2962009A1 (fr) * 2010-07-05 2012-01-06 Cultimer France Producteurs Associes Dispositif de conditionnement de mollusques de types differents et procede de conditionnement correspondant
CN106889008A (zh) * 2017-04-22 2017-06-27 朱超 多功能养殖水箱及层叠式养殖装置
IT201800002701A1 (it) * 2018-02-15 2019-08-15 Fabrizio Balestrino Vassoio e sistema per l’allevamento larvale di insetti
GB2575438A (en) * 2018-07-01 2020-01-15 Dickie Colin System and method for processing shellfish
CN114731975A (zh) * 2022-04-08 2022-07-12 江苏海洋大学 一种低成本提升净化牡蛎成活率的方法
US11528894B2 (en) 2017-06-01 2022-12-20 Saeplast Iceland Ehf Depuration system
CN116138192A (zh) * 2021-11-29 2023-05-23 重庆交通大学 一种用于鱼卵孵化的推板结构
US11724856B2 (en) 2020-04-28 2023-08-15 Rehrig Pacific Company Hybrid collapsible container

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804045A (en) * 1955-05-11 1957-08-27 John H Scott Separating apparatus for hatching brine shrimp
US3024764A (en) * 1960-03-11 1962-03-13 Heath Aircraft Inc Fish egg incubators
US3192899A (en) * 1961-05-30 1965-07-06 Lobstor Bridllington Ltd Device for the storage of shellfish
US4180012A (en) * 1977-12-12 1979-12-25 Zenger Harold H Sr Fish egg incubator with fry release means
WO1982003532A1 (fr) * 1981-04-09 1982-10-28 O Sullivan Brendan William Culture de mollusques
US4428145A (en) * 1981-08-10 1984-01-31 Robert Wheeler Shrimp bait container
WO1985002089A1 (fr) * 1983-11-21 1985-05-23 Institut National De La Recherche Agronomique Procede d'elevage de larves d'animaux se developpant en milieu aquatique et moyens pour la mise en oeuvre de ce procede

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804045A (en) * 1955-05-11 1957-08-27 John H Scott Separating apparatus for hatching brine shrimp
US3024764A (en) * 1960-03-11 1962-03-13 Heath Aircraft Inc Fish egg incubators
US3192899A (en) * 1961-05-30 1965-07-06 Lobstor Bridllington Ltd Device for the storage of shellfish
US4180012A (en) * 1977-12-12 1979-12-25 Zenger Harold H Sr Fish egg incubator with fry release means
WO1982003532A1 (fr) * 1981-04-09 1982-10-28 O Sullivan Brendan William Culture de mollusques
US4428145A (en) * 1981-08-10 1984-01-31 Robert Wheeler Shrimp bait container
WO1985002089A1 (fr) * 1983-11-21 1985-05-23 Institut National De La Recherche Agronomique Procede d'elevage de larves d'animaux se developpant en milieu aquatique et moyens pour la mise en oeuvre de ce procede

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0934697A1 (fr) * 1997-12-09 1999-08-11 Navital S.a.r.l. Procédé pour élever, traiter et stocker des coquillages indépendant de la saison et installation pour exécuter ce procédé
FR2790074A1 (fr) * 1999-02-23 2000-08-25 Gerard Marret Installation pour le refroidissement ou le rechauffement d'un liquide, notamment de l'eau de mer
GB2349786A (en) * 1999-05-12 2000-11-15 Univ Portsmouth Apparatus and method for rearing and collection of aquatic organisms
FR2801472A1 (fr) * 1999-11-30 2001-06-01 Thomas Froid Sa Procede d'entreposage, de transport et de conservation de langoustines et autres crustaces, vivants et dispositif permettant la mise en oeuvre du procede
ES2187326A1 (es) * 2000-10-10 2003-06-01 Mariscos Veiro S L Dispositivo depurador de moluscos mediante circulacion forzada de agua, y metodo correspondiente.
EP1474972A1 (fr) * 2003-05-09 2004-11-10 Tecno Impianti Di Gabellini Gregorio Conteneur à nettoyer les coquillages
US7870836B2 (en) 2004-01-13 2011-01-18 Froyland T Kjetil Device for raising, transportation and releasing crustacea juveniles and use of the device
WO2005067707A1 (fr) * 2004-01-13 2005-07-28 Froeyland T Kjetil Dispositif de deplacement, de transport et de liberation de crustaces juveniles et utilisation dudit dispositif
WO2008018053A2 (fr) * 2006-08-10 2008-02-14 Ramot At Tel-Aviv University Ltd Procédé et appareil de propagation d'invertébrés marins benthiques
WO2008018053A3 (fr) * 2006-08-10 2008-08-21 Univ Ramot Procédé et appareil de propagation d'invertébrés marins benthiques
WO2008034173A1 (fr) * 2006-09-20 2008-03-27 John Kowarsky Systeme d'aquaculture
WO2011138493A1 (fr) * 2010-05-07 2011-11-10 Rotogal, S.L. Contenant pour le nettoyage de mollusques
FR2962009A1 (fr) * 2010-07-05 2012-01-06 Cultimer France Producteurs Associes Dispositif de conditionnement de mollusques de types differents et procede de conditionnement correspondant
CN106889008A (zh) * 2017-04-22 2017-06-27 朱超 多功能养殖水箱及层叠式养殖装置
US11528894B2 (en) 2017-06-01 2022-12-20 Saeplast Iceland Ehf Depuration system
IT201800002701A1 (it) * 2018-02-15 2019-08-15 Fabrizio Balestrino Vassoio e sistema per l’allevamento larvale di insetti
GB2575438A (en) * 2018-07-01 2020-01-15 Dickie Colin System and method for processing shellfish
GB2575438B (en) * 2018-07-01 2020-10-14 Dickie Colin System and method for processing shellfish
US11724856B2 (en) 2020-04-28 2023-08-15 Rehrig Pacific Company Hybrid collapsible container
CN116138192A (zh) * 2021-11-29 2023-05-23 重庆交通大学 一种用于鱼卵孵化的推板结构
CN116138192B (zh) * 2021-11-29 2024-04-19 重庆交通大学 一种用于鱼卵孵化的推板结构
CN114731975A (zh) * 2022-04-08 2022-07-12 江苏海洋大学 一种低成本提升净化牡蛎成活率的方法

Also Published As

Publication number Publication date
GB8708053D0 (en) 1987-05-07

Similar Documents

Publication Publication Date Title
EP0285457A1 (fr) Procédé et dispositif pour l'élevage de crustacés
US4851112A (en) Fish tank filter
US5006230A (en) Dual-action aquarium filter
KR101782736B1 (ko) 집약적 순환 여과식 양식시스템
WO1992021619A1 (fr) Systeme de traitement secondaire d'eaux usees
US5205237A (en) Method and apparatus for growing fish in a recirculating tank
US5178093A (en) Aquaculture system
KR101934267B1 (ko) 바이오플락시스템 유기고형물 제거장치
KR101782735B1 (ko) 에너지 절감용 순환 여과식 어류 양식시스템
KR101058492B1 (ko) 활어수족관의 살균정수장치 및 이를 구비한 활어수족관
US5014647A (en) Fish culture system
KR100922918B1 (ko) 해수 청정장치
WO2006050600A1 (fr) Systeme d'aeration de liquides
JP2001170617A (ja) 泡沫分離装置及びそれを用いた水浄化システム
US4471718A (en) Apparatus for incubating fish eggs
JP2001170616A (ja) 泡沫分離装置及びそれを用いた水浄化システム
US4806237A (en) Waste removal apparatus
JP6208918B2 (ja) 水産物の養殖装置
JP4960182B2 (ja) 飼育水処理方法、飼育水処理装置、および飼育システム
US3682307A (en) Water filter
JP3030425U (ja) 濾過装置
CA2131180A1 (fr) Systeme d'epuration secondaire des eaux usees
JP4454825B2 (ja) 汚水浄化槽及び汚水浄化方法
US20090200687A1 (en) Treatment system for liquid
KR100908451B1 (ko) 정수 및 산소공급장치

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB GR IT NL SE

17P Request for examination filed

Effective date: 19890404

17Q First examination report despatched

Effective date: 19900921

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19911217